This group has been designated for adults age 18 or older. Please sign in and confirm your date of birth in your profile so we can verify your eligibility. You may opt to make your date of birth private.
What does make a significant difference along the whole intelligence spectrum is something else: how much self-discipline or self-control one uses to approach the tasks at hand (Duckworth and Seligman, 2005; Tangney, Baumeister, and Boone, 2004).
